When I was a freshman in High School, we had a brand new electronics class available in which we built kits, usually from Velleman or Grayhill. I remember building a transistor radio and a 120 VAC to 6/12 VDC power supply, as an example. These kits were educational in teaching you, not only how to build the device, but how the device works. This a fairly simple kit, but still provides an interesting project in the end and takes me back to those early days of building kits.
This kit is listed as a difficulty of 1 out of 5. A 9V battery is required, as is a soldering iron. Everything else is included in the kit. The schematic and assembly instructions are printed on the inside of the package insert, along with some other useful information.
First, the resistors were installed. Then, the LEDs were installed. Next, the capacitors were installed. Finally, the transistors were installed. Once all the components were installed, the battery holder was connected, which also serves as a stand.